From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752800AbeCOSmr (ORCPT ); Thu, 15 Mar 2018 14:42:47 -0400 Received: from mail-pl0-f65.google.com ([209.85.160.65]:35381 "EHLO mail-pl0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751975AbeCOSmo (ORCPT ); Thu, 15 Mar 2018 14:42:44 -0400 X-Google-Smtp-Source: AG47ELvhjxeDbzm9aIFRbS416l0jzp4yxdjF+cBd8ruiN92zkFZcgTikbhx0gfUHkezbk1KRnM1ltQ== Subject: [pci PATCH v7 2/5] virtio_pci: Add support for unmanaged SR-IOV on virtio_pci devices From: Alexander Duyck To: bhelgaas@google.com, alexander.h.duyck@intel.com, linux-pci@vger.kernel.org Cc: virtio-dev@lists.oasis-open.org, kvm@vger.kernel.org, netdev@vger.kernel.org, dan.daly@intel.com, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, keith.busch@intel.com, netanel@amazon.com, ddutile@redhat.com, mheyne@amazon.de, liang-min.wang@intel.com, mark.d.rustad@intel.com, dwmw2@infradead.org, hch@lst.de, dwmw@amazon.co.uk Date: Thu, 15 Mar 2018 11:42:41 -0700 Message-ID: <20180315184132.3102.90947.stgit@localhost.localdomain> In-Reply-To: <20180315183449.3102.64791.stgit@localhost.localdomain> References: <20180315183449.3102.64791.stgit@localhost.localdomain> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alexander Duyck Hardware-realized virtio_pci devices can implement SR-IOV, so this patch enables its use. The device in question is an upcoming Intel NIC that implements both a virtio_net PF and virtio_net VFs. These are hardware realizations of what has been up to now been a software interface. The device in question has the following 4-part PCI IDs: PF: vendor: 1af4 device: 1041 subvendor: 8086 subdevice: 15fe VF: vendor: 1af4 device: 1041 subvendor: 8086 subdevice: 05fe The patch currently needs no check for device ID, because the callback will never be made for devices that do not assert the capability or when run on a platform incapable of SR-IOV. One reason for this patch is because the hardware requires the vendor ID of a VF to be the same as the vendor ID of the PF that created it. So it seemed logical to simply have a fully-functioning virtio_net PF create the VFs. This patch makes that possible. Reviewed-by: Christoph Hellwig Signed-off-by: Mark Rustad Signed-off-by: Alexander Duyck --- v4: Dropped call to pci_disable_sriov in virtio_pci_remove function v5: Replaced call to pci_sriov_configure_unmanaged with pci_sriov_configure_simple v6: Dropped "#ifdef" checks for IOV wrapping sriov_configure definition v7: No code change, added Reviewed-by drivers/virtio/virtio_pci_common.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c index 48d4d1cf1cb6..67a227fd7aa0 100644 --- a/drivers/virtio/virtio_pci_common.c +++ b/drivers/virtio/virtio_pci_common.c @@ -596,6 +596,7 @@ static void virtio_pci_remove(struct pci_dev *pci_dev) #ifdef CONFIG_PM_SLEEP .driver.pm = &virtio_pci_pm_ops, #endif + .sriov_configure = pci_sriov_configure_simple, }; module_pci_driver(virtio_pci_driver); From mboxrd@z Thu Jan 1 00:00:00 1970 From: alexander.duyck@gmail.com (Alexander Duyck) Date: Thu, 15 Mar 2018 11:42:41 -0700 Subject: [pci PATCH v7 2/5] virtio_pci: Add support for unmanaged SR-IOV on virtio_pci devices In-Reply-To: <20180315183449.3102.64791.stgit@localhost.localdomain> References: <20180315183449.3102.64791.stgit@localhost.localdomain> Message-ID: <20180315184132.3102.90947.stgit@localhost.localdomain> From: Alexander Duyck Hardware-realized virtio_pci devices can implement SR-IOV, so this patch enables its use. The device in question is an upcoming Intel NIC that implements both a virtio_net PF and virtio_net VFs. These are hardware realizations of what has been up to now been a software interface. The device in question has the following 4-part PCI IDs: PF: vendor: 1af4 device: 1041 subvendor: 8086 subdevice: 15fe VF: vendor: 1af4 device: 1041 subvendor: 8086 subdevice: 05fe The patch currently needs no check for device ID, because the callback will never be made for devices that do not assert the capability or when run on a platform incapable of SR-IOV. One reason for this patch is because the hardware requires the vendor ID of a VF to be the same as the vendor ID of the PF that created it. So it seemed logical to simply have a fully-functioning virtio_net PF create the VFs. This patch makes that possible. Reviewed-by: Christoph Hellwig Signed-off-by: Mark Rustad Signed-off-by: Alexander Duyck --- v4: Dropped call to pci_disable_sriov in virtio_pci_remove function v5: Replaced call to pci_sriov_configure_unmanaged with pci_sriov_configure_simple v6: Dropped "#ifdef" checks for IOV wrapping sriov_configure definition v7: No code change, added Reviewed-by drivers/virtio/virtio_pci_common.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c index 48d4d1cf1cb6..67a227fd7aa0 100644 --- a/drivers/virtio/virtio_pci_common.c +++ b/drivers/virtio/virtio_pci_common.c @@ -596,6 +596,7 @@ static void virtio_pci_remove(struct pci_dev *pci_dev) #ifdef CONFIG_PM_SLEEP .driver.pm = &virtio_pci_pm_ops, #endif + .sriov_configure = pci_sriov_configure_simple, }; module_pci_driver(virtio_pci_driver); From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: virtio-dev-return-3575-cohuck=redhat.com@lists.oasis-open.org Sender: List-Post: List-Help: List-Unsubscribe: List-Subscribe: Received: from lists.oasis-open.org (oasis-open.org [66.179.20.138]) by lists.oasis-open.org (Postfix) with ESMTP id C441D581819D for ; Thu, 15 Mar 2018 11:42:54 -0700 (PDT) From: Alexander Duyck Date: Thu, 15 Mar 2018 11:42:41 -0700 Message-ID: <20180315184132.3102.90947.stgit@localhost.localdomain> In-Reply-To: <20180315183449.3102.64791.stgit@localhost.localdomain> References: <20180315183449.3102.64791.stgit@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Subject: [virtio-dev] [pci PATCH v7 2/5] virtio_pci: Add support for unmanaged SR-IOV on virtio_pci devices To: bhelgaas@google.com, alexander.h.duyck@intel.com, linux-pci@vger.kernel.org Cc: virtio-dev@lists.oasis-open.org, kvm@vger.kernel.org, netdev@vger.kernel.org, dan.daly@intel.com, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, keith.busch@intel.com, netanel@amazon.com, ddutile@redhat.com, mheyne@amazon.de, liang-min.wang@intel.com, mark.d.rustad@intel.com, dwmw2@infradead.org, hch@lst.de, dwmw@amazon.co.uk List-ID: From: Alexander Duyck Hardware-realized virtio_pci devices can implement SR-IOV, so this patch enables its use. The device in question is an upcoming Intel NIC that implements both a virtio_net PF and virtio_net VFs. These are hardware realizations of what has been up to now been a software interface. The device in question has the following 4-part PCI IDs: PF: vendor: 1af4 device: 1041 subvendor: 8086 subdevice: 15fe VF: vendor: 1af4 device: 1041 subvendor: 8086 subdevice: 05fe The patch currently needs no check for device ID, because the callback will never be made for devices that do not assert the capability or when run on a platform incapable of SR-IOV. One reason for this patch is because the hardware requires the vendor ID of a VF to be the same as the vendor ID of the PF that created it. So it seemed logical to simply have a fully-functioning virtio_net PF create the VFs. This patch makes that possible. Reviewed-by: Christoph Hellwig Signed-off-by: Mark Rustad Signed-off-by: Alexander Duyck --- v4: Dropped call to pci_disable_sriov in virtio_pci_remove function v5: Replaced call to pci_sriov_configure_unmanaged with pci_sriov_configure_simple v6: Dropped "#ifdef" checks for IOV wrapping sriov_configure definition v7: No code change, added Reviewed-by drivers/virtio/virtio_pci_common.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c index 48d4d1cf1cb6..67a227fd7aa0 100644 --- a/drivers/virtio/virtio_pci_common.c +++ b/drivers/virtio/virtio_pci_common.c @@ -596,6 +596,7 @@ static void virtio_pci_remove(struct pci_dev *pci_dev) #ifdef CONFIG_PM_SLEEP .driver.pm = &virtio_pci_pm_ops, #endif + .sriov_configure = pci_sriov_configure_simple, }; module_pci_driver(virtio_pci_driver); --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org